Original Source: https://support.wix.com/en/article/wix-editor-changing-an-image-on-your-site
Freshen up your site's look at any time by changing your site's images. You can upload your own images, use the free Wix image collections, or even purchase professional imagery from Shutterstock.
Important:
Free Wix media files are available for digital use within Wix only. For more information, see the Wix Terms of Use.
Tip:
Learn what image file types are supported here.